Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8055898 | Tag authentication system | — | 2011-11-08 |
| 7953974 | Authentication method, authentication system, and tag device thereof, data reference client, authentication server, and data server | Yoshiharu Sato, Katsunori Iwamoto | 2011-05-31 |